Here you can exchange bitcoins for fiat, including a dollar, although among digital there are garbage coins. But they are quite easy to distinguish, just look at the information on the Internet and see what they write about it in the community. I recommend yobit for use, a good exchange. I read an article that said that most account hacking is associated with the negligence of customer trading platforms. The owners of compromised accounts did not use two-level identification, and a large number See full review